US3332343A - Selective hammer interposing means in high speed printers - Google Patents
Selective hammer interposing means in high speed printers Download PDFInfo
- Publication number
- US3332343A US3332343A US559000A US55900066A US3332343A US 3332343 A US3332343 A US 3332343A US 559000 A US559000 A US 559000A US 55900066 A US55900066 A US 55900066A US 3332343 A US3332343 A US 3332343A
- Authority
- US
- United States
- Prior art keywords
- hammer
- printing
- interposer
- hammers
- character
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J9/00—Hammer-impression mechanisms
- B41J9/02—Hammers; Arrangements thereof
- B41J9/10—Hammers; Arrangements thereof of more than one hammer, e.g. one for each character position
- B41J9/12—Hammers; Arrangements thereof of more than one hammer, e.g. one for each character position each operating in more than one character position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J9/00—Hammer-impression mechanisms
- B41J9/14—Means for selecting or suppressing individual hammers
Definitions
- This invention relates to printing devices and, in particular, to devices wherein printing is accomplished by actuating hammers for coaction with selected character type faces.
- each hammer mechanism contains a drive hammer which is several characters in width and an interposing hammer which is one character in width.
- the interposer hammer is activated by the drive hammer to print in one selected character position, then the interposer hammer is moved to another character position and again activated by the same drive hammer to effect printing in that position during a second cycle.
- each drive hammer is four characters in width, so an entire line is pirnted in four cycles. After each line is printed, the document is moved, bringing the next line to be prined into position. The interposer hammer is returned to its first position while the document is being moved. If desired, the interposer hammer can be moved in opposite directions during the printing of successive lines at ice the expense of complicating the control mechanism.
- the type is mounted on a drum, but with obvious modifications, other type carriers can be used, such as train or chain type carriers, where the same set of type is moved past all character positions in the printing line.
- Another object is to provide an improved printing device employing multiple-character width drive hammers and interposer hammers.
- FIGURE 1 is a cut-away diagram showing the structure of a preferred embodiment of the invention.
- FIGURE 2 is a diagram showing details of a hammer mechanism that is suitable for use in the preferred embodiment of the invention.
- the inventive hammer arrangement is shown in a drum printer environment in FIG. 1, where type faces 10 are engraved in rows and columns on the surface of a drum 11.
- the document to be printed and the printing ribbon which for simplicity are locted directly below the drum.
- hammer mechanisms are selectively activated to force the document and ribbon against the desired type faces to effect printing.
- the hammer mechanism comprises a plurality of drive hammers 13 and interposer hammers 15.
- the drive hammer has a width W which is equal to four printing positions on the document (four columns of type faces on the drum).
- the interposer hammer 15 is one character position (column) in width. As shown in FIG. 2, the interposer hammer is located adjacent to the rightmost quarter of the surface of the drive hammer 13. After printing one character on the drum, the interposer hammer is shifted toward the left to a position adjacent to the position shown in FIG. 2, and a second character is printed on the document. Similarly, a third and a fourth character are printed as the interposer hammer is moved to a third position and finally to a fourth (leftmost) position. Thus, four characters are printed on the document by four successive actuations of each drive hammer 13.
- the interposer hammer 15 is preferably formed from spring steel with the tip folded back (as shown in FIG. 2) to provide a clearly defined hammer region.
- other hard flexible materials can be used, such as stainless steel, beryllium copper or titanium.
- a group of drive hammers 13 is aligned along the line to be printed. While the drive hammer actuating mechanism is not critical, in FIG. 1 two hammers are mounted in each module 17 and the hammers are electromagnetically actuated. Suitable hammer actuating mechanisms are shown in copending US. application Ser. No. 327,201, by Humbert C. Russo, entitled Print Hammer Assembly for High Speed Printers, and filed Dec. 2., 1963, which issued as US. Patent No. 3,266,418.
- interposer hammers 15 are arranged for simultaneous shifting movement.
- the interposer hammers are formed as part of an integral mounting element 19.
- the ends 21 of the mounting element 19 are bent at right angles and connected to the rear of the hammer mechanism by screws 23. Since the mounting element 19 is formed from spring steel, the entire interposer assembly is free for shifting movement along the direction of the line of hammers.
- the interposer hammers are shifted between printing cycles such that the entire line of printing is effected in four cycles. The interposer hammers are not shifted to another position until all of the character positions corresponding to the present position have been printed (every fourth position along the line of printing).
- the position of the interposer hammer assembly is controlled by a wrap-around spring clutch 25 and cam follower 27.
- An input element 29 of the spring clutch is continuously rotated by a shaft 31 which is mounted in a bearing 33 and driven by a belt 35 on a pulley 37.
- An output element 39 of the clutch rotates under the control of a pivoted arm 41 and a ratchet 43.
- the arm 41 is pivoted about a fixed axis out of engagement with the ratchet 43 after each revolution of the drum 11 under the control of conventional. timing circuits, such as shown in US. Patent No. 3,142,247 to David F. Sweeney, entitled Control System for High Speed Printers, filed on Mar. 8, 1962, and issued on July 28, 1964.
- the interposer hammer assembly is connected to a control arm 47, the other end of which is mounted for sliding motion in a bushing 49.
- the control arm is broken to show the cam follower components including two follower wheels 51 and a cam surface 53.
- One follower wheel 51 is located on each side of the cam surface 53 and the wheels are arranged for rotational movement about a pair of axles 54 which are mounted on the control arm 47.
- rotation of the cam surface 53 (under control of the output element 39 of the clutch) causes the :arm 47 to move laterally in conformance with the shape of the cam surface 53.
- the cam surface 53 follows a smooth curve which joins four points whose distances from its center of rotation differ by equal increments.
- the arm 47 is shifted through three equal displacements and then returned to its original position.
- the control arm 41 is controlled by a solenoid or other means to cause the 90 rotation of the cam follower after each printing cycle is completed.
- a printing device comprising, in combination:
- the hammer mechanism comprising a plurality of drive hammers arranged along the printing line, each having a width along the printing line essentially spanning a plurality of character positions, an interposer hammer for each drive hammer, each interposer hammer arranged between its associated drive hammer and the presented type, having a width essentially spanning at least one character position, and movable in the direction of the printing line to each of the character positions corresponding to the associated drive hammer, and means for sequentially moving the interposer hammers to permit printing of successive character positions.
- each drive hammer has a width that is approximately equal to the distance along the printing line that encompasses four character positions and each interposer hammer has a width that is approximately equal to the distance along the printing line that encompasses one character position.
Landscapes
- Printing Methods (AREA)
- Printers Characterized By Their Purpose (AREA)
- Dot-Matrix Printers And Others (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US559000A US3332343A (en) | 1966-06-20 | 1966-06-20 | Selective hammer interposing means in high speed printers |
FR48640A FR1523647A (fr) | 1966-06-20 | 1967-05-10 | Perfectionnements aux imprimeuses à marteaux |
DE1549672A DE1549672C3 (de) | 1966-06-20 | 1967-06-16 | Druckvorrichtung mit mindestens einem ständig umlaufenden Typensatz |
GB28499/67A GB1147498A (en) | 1966-06-20 | 1967-06-20 | Printing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US559000A US3332343A (en) | 1966-06-20 | 1966-06-20 | Selective hammer interposing means in high speed printers |
Publications (1)
Publication Number | Publication Date |
---|---|
US3332343A true US3332343A (en) | 1967-07-25 |
Family
ID=24231875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US559000A Expired - Lifetime US3332343A (en) | 1966-06-20 | 1966-06-20 | Selective hammer interposing means in high speed printers |
Country Status (4)
Country | Link |
---|---|
US (1) | US3332343A (de) |
DE (1) | DE1549672C3 (de) |
FR (1) | FR1523647A (de) |
GB (1) | GB1147498A (de) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3416442A (en) * | 1967-06-20 | 1968-12-17 | Ibm | Selective hammer actuating means in chain printers |
US3433153A (en) * | 1967-12-29 | 1969-03-18 | Ibm | Printer with swiveling pushrods |
US3461796A (en) * | 1967-11-20 | 1969-08-19 | Honeywell Inc | High-speed printer with shared control circuit |
US3465670A (en) * | 1968-01-02 | 1969-09-09 | Honeywell Inc | Type hammer actuating means in high-speed printers |
US3498216A (en) * | 1965-12-30 | 1970-03-03 | Int Standard Electric Corp | Print hammer interposer means for high speed printers |
US3654857A (en) * | 1969-06-16 | 1972-04-11 | Mohawk Data Sciences Corp | Printer having fewer hammer actuating means than hammers |
US3672297A (en) * | 1970-06-30 | 1972-06-27 | Ibm | Printing control device in high speed chain printer with hammers movable to plural print positions |
US3768403A (en) * | 1971-11-08 | 1973-10-30 | Tally Corp | High speed printer with leaflike impact means |
US3782278A (en) * | 1970-12-11 | 1974-01-01 | Tally Corp | Impact line printer |
US3789969A (en) * | 1972-04-06 | 1974-02-05 | Centronics Data Computer | High speed printer |
US3797387A (en) * | 1971-09-10 | 1974-03-19 | Triumph Werke Nuernberg Ag | High speed printer |
US3833891A (en) * | 1973-03-26 | 1974-09-03 | Centronics Data Computer | High speed matrix printer |
US3911814A (en) * | 1974-05-15 | 1975-10-14 | Data Products Corp | Hammer bank move control system |
US3994219A (en) * | 1973-10-25 | 1976-11-30 | Citizen Watch Co., Ltd. | Printer |
JPS51145622A (en) * | 1975-06-06 | 1976-12-14 | Canon Kk | Printer |
US4064800A (en) * | 1976-03-01 | 1977-12-27 | Sperry Rand Corporation | Printer device using time shared hammers |
JPS5338415A (en) * | 1976-09-17 | 1978-04-08 | Tokyo Electric Co Ltd | Method of producing printing hammer for printer |
US4150619A (en) * | 1976-12-02 | 1979-04-24 | International Business Machines Corporation | Printer for different character densities |
US4250807A (en) * | 1977-07-11 | 1981-02-17 | Canon Kabushiki Kaisha | High speed printer with stain preventing member between alternately spaced hammers |
US4337697A (en) * | 1978-12-30 | 1982-07-06 | Alps Electric Co., Ltd. | Serial printer |
US4463672A (en) * | 1977-07-11 | 1984-08-07 | Canon Kabushiki Kaisha | Printing apparatus having stain preventing means |
US5133253A (en) * | 1988-01-19 | 1992-07-28 | Printronix, Inc. | Flexure member in cam driven shuttle printer |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2766686A (en) * | 1953-06-11 | 1956-10-16 | Hughes Aircraft Co | High speed electro-mechanical interference-type transducer |
US2805620A (en) * | 1951-12-15 | 1957-09-10 | Rosen Leo | Control means for high speed printing apparatus |
US2831424A (en) * | 1954-03-01 | 1958-04-22 | Burroughs Corp | Traveling type carriage in high speed printers |
US3128693A (en) * | 1961-06-09 | 1964-04-14 | Potter Instrument Co Inc | High speed printer drum |
US3135195A (en) * | 1961-06-22 | 1964-06-02 | Potter Instrument Co Inc | High speed printer with moving characters and single hammer |
US3188947A (en) * | 1963-01-11 | 1965-06-15 | Burroughs Corp | Platen actuating means in high speed belt printer |
US3253539A (en) * | 1963-09-16 | 1966-05-31 | Clary Corp | Driving and supporting means for high speed printing drum |
US3266418A (en) * | 1963-12-02 | 1966-08-16 | Anelex Corp | Print hammer assembly for high speed printers |
-
1966
- 1966-06-20 US US559000A patent/US3332343A/en not_active Expired - Lifetime
-
1967
- 1967-05-10 FR FR48640A patent/FR1523647A/fr not_active Expired
- 1967-06-16 DE DE1549672A patent/DE1549672C3/de not_active Expired
- 1967-06-20 GB GB28499/67A patent/GB1147498A/en not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2805620A (en) * | 1951-12-15 | 1957-09-10 | Rosen Leo | Control means for high speed printing apparatus |
US2766686A (en) * | 1953-06-11 | 1956-10-16 | Hughes Aircraft Co | High speed electro-mechanical interference-type transducer |
US2831424A (en) * | 1954-03-01 | 1958-04-22 | Burroughs Corp | Traveling type carriage in high speed printers |
US3128693A (en) * | 1961-06-09 | 1964-04-14 | Potter Instrument Co Inc | High speed printer drum |
US3135195A (en) * | 1961-06-22 | 1964-06-02 | Potter Instrument Co Inc | High speed printer with moving characters and single hammer |
US3188947A (en) * | 1963-01-11 | 1965-06-15 | Burroughs Corp | Platen actuating means in high speed belt printer |
US3253539A (en) * | 1963-09-16 | 1966-05-31 | Clary Corp | Driving and supporting means for high speed printing drum |
US3266418A (en) * | 1963-12-02 | 1966-08-16 | Anelex Corp | Print hammer assembly for high speed printers |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3498216A (en) * | 1965-12-30 | 1970-03-03 | Int Standard Electric Corp | Print hammer interposer means for high speed printers |
US3416442A (en) * | 1967-06-20 | 1968-12-17 | Ibm | Selective hammer actuating means in chain printers |
US3461796A (en) * | 1967-11-20 | 1969-08-19 | Honeywell Inc | High-speed printer with shared control circuit |
US3433153A (en) * | 1967-12-29 | 1969-03-18 | Ibm | Printer with swiveling pushrods |
US3465670A (en) * | 1968-01-02 | 1969-09-09 | Honeywell Inc | Type hammer actuating means in high-speed printers |
US3654857A (en) * | 1969-06-16 | 1972-04-11 | Mohawk Data Sciences Corp | Printer having fewer hammer actuating means than hammers |
US3672297A (en) * | 1970-06-30 | 1972-06-27 | Ibm | Printing control device in high speed chain printer with hammers movable to plural print positions |
US3782278A (en) * | 1970-12-11 | 1974-01-01 | Tally Corp | Impact line printer |
US3797387A (en) * | 1971-09-10 | 1974-03-19 | Triumph Werke Nuernberg Ag | High speed printer |
US3768403A (en) * | 1971-11-08 | 1973-10-30 | Tally Corp | High speed printer with leaflike impact means |
US3789969A (en) * | 1972-04-06 | 1974-02-05 | Centronics Data Computer | High speed printer |
US3833891A (en) * | 1973-03-26 | 1974-09-03 | Centronics Data Computer | High speed matrix printer |
US3994219A (en) * | 1973-10-25 | 1976-11-30 | Citizen Watch Co., Ltd. | Printer |
US3911814A (en) * | 1974-05-15 | 1975-10-14 | Data Products Corp | Hammer bank move control system |
JPS5759832B2 (de) * | 1975-06-06 | 1982-12-16 | Kyanon Kk | |
JPS51145622A (en) * | 1975-06-06 | 1976-12-14 | Canon Kk | Printer |
US4064800A (en) * | 1976-03-01 | 1977-12-27 | Sperry Rand Corporation | Printer device using time shared hammers |
JPS5338415A (en) * | 1976-09-17 | 1978-04-08 | Tokyo Electric Co Ltd | Method of producing printing hammer for printer |
US4150619A (en) * | 1976-12-02 | 1979-04-24 | International Business Machines Corporation | Printer for different character densities |
US4250807A (en) * | 1977-07-11 | 1981-02-17 | Canon Kabushiki Kaisha | High speed printer with stain preventing member between alternately spaced hammers |
US4463672A (en) * | 1977-07-11 | 1984-08-07 | Canon Kabushiki Kaisha | Printing apparatus having stain preventing means |
US4337697A (en) * | 1978-12-30 | 1982-07-06 | Alps Electric Co., Ltd. | Serial printer |
US5133253A (en) * | 1988-01-19 | 1992-07-28 | Printronix, Inc. | Flexure member in cam driven shuttle printer |
Also Published As
Publication number | Publication date |
---|---|
FR1523647A (fr) | 1968-05-03 |
DE1549672A1 (de) | 1971-04-15 |
GB1147498A (en) | 1969-04-02 |
DE1549672B2 (de) | 1975-04-10 |
DE1549672C3 (de) | 1979-06-21 |
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